Suppose you are an advisor to a wildlife agency that has asked you to evaluate a population of deer in which antler size has shrunk considerably in the course of about three generations.The animals mate more or less randomly and are not being targeted by hunters.Which effect best accounts for the change in antler size?
A) Environmental effects
B) Overdominance
C) Heterosis
D) Pleiotropy
E) Epistasis

Question

Quizplus · Accepted Answer

The change in antler size is most likely due to environmental effects, such as changes in habitat or availability of resources. Overdominance, heterosis, pleiotropy, and epistasis would not account for such a significant change in one trait over a few generations, especially when there is random mating and no selective pressure from hunting.

Suppose You Are an Advisor to a Wildlife Agency That